SF6 Outdoor AC High Voltage Porcelain Column Circuit BreakerDetailed product description：

The LW39-126 outdoor AC high-voltage porcelain column SF6 circuit breaker is a high-performance new type of SF6 circuit breaker designed based on fully absorbing and digesting advanced foreign SF6 circuit breaker technology, in accordance with national standards, and combined with domestic industrial manufacturing level. This product is used in power systems with a frequency of 50Hz and a nominal voltage of 110kV. It is the main power equipment for control and protection in power plants and substations. Can be equipped with CT □ - type spring operated mechanism, three-phase mechanical linkage operation. SF6 gas with excellent arc extinguishing and electrical insulation properties is filled internally. All seals use double O-ring seals, which can effectively prevent leakage.

Characteristics of LW39-126 Outdoor AC High Voltage Porcelain Column SF6 Circuit Breaker

a、 High breaking performance, capable of reliably breaking short circuits, out of step faults, and near-field faults at the output terminal.
b、 The arc extinguishing chamber is manufactured using spinning technology, with excellent airflow characteristics and a simple structure.
c、 Long electrical lifespan, capable of breaking 20 times at full capacity, long maintenance cycle, low maintenance workload, and maintenance free for 10 years under normal operating conditions.
d、 The operating mechanism has low energy and adopts a simple and reliable compact spring operating mechanism.
e、 The gas has a low rated inflation pressure and is not easily liquefied at low temperatures.
f、 Small footprint.
g、 Low noise level, suitable for residential areas.
h、 The on-site installation time is short.

Model meaning

Technical parameters of LW39-126 outdoor AC high-voltage porcelain column SF6 circuit breaker

name		unit	parameter
rated voltage		kV	one hundred and twenty-six
rated frequency		Hz	fifty
rated current		A	three thousand one hundred and fifty
Rated short-circuit breaking current		kA	31.5/40
Rated short-time withstand current		kA/s	31.5 (4)/40(3)
Rated peak closing current		kA	one hundred
Rated peak withstand current		kA	one hundred
Total breaking time		ms	≤65
closing time		ms	≤110
Prime Minister's disconnection coefficient			one point five
Out of step breaking current		kA	ten
Rated operating cycle			0-0.3s-CO-180s-CO
Continuous breaking rated short-circuit current electrical life		time	20（40kA）
mechanical life		time	six thousand
Rated sulfur hexafluoride gas pressure		Mpa	0.55MPa/0.60
Power frequency withstand voltage	relatively	kV	two hundred and seventy-five
	Between fracture surfaces	kV	two hundred and seventy-five
Peak value of lightning impulse withstand voltage	relatively	kV	six hundred and fifty
	Between fracture surfaces	kV	six hundred and fifty

Ordering Instructions
1. Model, specifications, quantity, and ordering period;
2. Required accessories, spare parts, tools, and SF6 gas, etc;
3. If there are any other requirements, please negotiate when placing the order.